Did the dmesg's output releate with the LCD backlight problem? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1965605
Title: HUAWEI matebook x pro 2022 led screen backlight do not work with ubuntu 20.x also 21.10 Status in linux package in Ubuntu: Confirmed Bug description: linux-modules-5.13.0-37-generic also recent kernel such as 5.16.x LCD backlight control key do not work,dmesg report a lot of ACPI error, I have no idea if these errors related with this problem. Here is the dmesg logs : --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.21 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gpmn 4421 F.... pulseaudio CasperMD5CheckResult: skip CurrentDesktop: KDE DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2022-03-19 (0 days ago) InstallationMedia: Ubuntu 20.04.4 LTS "Focal Fossa" - Release amd64 (20220223) MachineType: HUAWEI MRG-WXX Package: linux (not installed) ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.13.0-37-generic root=UUID=63fdfb74-7fb4-47e8-ada6-2f605a114c46 ro quiet splash nomodeset vt.handoff=7 ProcVersionSignature: Ubuntu 5.13.0-37.42~20.04.1-generic 5.13.19 RelatedPackageVersions: linux-restricted-modules-5.13.0-37-generic N/A linux-backports-modules-5.13.0-37-generic N/A linux-firmware 1.187.29 Tags: focal Uname: Linux 5.13.0-37-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 1/19/2022 dmi.bios.release: 2.18 dmi.bios.vendor: HUAWEI dmi.bios.version: 2.18 dmi.board.asset.tag: N/A dmi.board.name: MRG-WXX-PCB-B1 dmi.board.vendor: HUAWEI dmi.board.version: M1010 dmi.chassis.asset.tag: N/A dmi.chassis.type: 10 dmi.chassis.vendor: HUAWEI dmi.chassis.version: M1010 dmi.ec.firmware.release: 2.18 dmi.modalias: dmi:bvnHUAWEI:bvr2.18:bd1/19/2022:br2.18:efr2.18:svnHUAWEI:pnMRG-WXX:pvrM1010:rvnHUAWEI:rnMRG-WXX-PCB-B1:rvrM1010:cvnHUAWEI:ct10:cvrM1010:skuC233: dmi.product.family: MateBook X dmi.product.name: MRG-WXX dmi.product.sku: C233 dmi.product.version: M1010 dmi.sys.vendor: HUAWEI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1965605/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
